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随现代农业发展和集约化的提高，世界化肥发展总趋势是向生产高浓化肥和复合化肥方向发展，ＢＢ肥是一种多元素高浓度颗粒掺混肥，最初是由美国在混合肥料的施用中产生并发展起来的，目前已遍及全世界。为掌握“ＢＢ肥在我市水稻上的应用效果，我们进行了本试验。１材料与方法
With the development of modern agriculture and the intensification of the enhancement, the general tendency of world fertilizer development is toward the direction of producing high concentration fertilizers and compound fertilizers. BB fertilizer is a multi-element and high-concentration granule mixed fertilizer originally applied by the United States Generated and developed in the world has now spread all over the world. In order to grasp the application effect of BB fertilizer on rice in our city, we conducted this experiment.1 Materials and Methods